Beater roll



Feb. 19, 1929.

F. G. FEELE-Y BEATER ROLL Filed Jan. 26, 1928 Patented Feb. 19, 1929.

UNITE!) FRANK G. FEELEY, OF ?ITISFIELD, MASSACHUSETTS, ASSIG-NOR TO 13. D. JONES 6c SONS (30., OF PITISFIELD, MASSACHUSETTS, A COBEORATION OF MASSACHUSETTS.

BEATER ROLL.

Application filed January 26, 1928. Serial No. 249,550.

This invention relates to certain improvements in beater rolls for washing, beating and refining engines used in the production or treatment of paper pulp, the improvement being designed especially for rolls of that class known in the art as bandless rolls.

These beater rolls comprise a carrier, either cylindrical or made up of a number of cylindrical heads or spiders, in which are formed slots for the reception of the grinding bars, by which the grinding function of the beater rolls is effected. In the operation of these rolls, if it becomes necessary to replace a grinding bar or bars for any reason, it is very desirable that such bar may be removed from the roll without the necessity of removing any of the other bars, or c isturbing the fastenings of such other bars. Such beater rolls have been proposed in the art and are generally known as bandless rolls.

It is the especial object of the present in vention to produce an improved roll of this type in which a construction of simple form has been provided for effecting the individual locking of the grinding bars in the rolls, the construction being such that the roll may be produced in a more economical way than the prior constructions, but one in which the bars are efi'ectually locked in place.

With this and other objects not specifically referred to in view, the invention consists in certain novel parts, arrangements and combinations which will be described in connection with the accompanying drawings and the novel features pointed out in the claims hereunto annexed.

In these drawings,

Figure l a side view, partly in section, of the improved beater roll, the grinding bars being shown in position;

Figure 2 is a detail end view, partly in section and partly broken away, of the improved arrangement for locking the bars in place;

Figure 3 is a perspective view, on an enlarged scale, showing the mechanism;

Figure 4 is a detail sectional View, looking in the direction of arrow 4: of Figure 4, showing a part of the locking mechanism, and

Figures 5 and 6 are isometric views of two or the locking wedges that are employed for locking the grinding bars in place.

Referring now to these drawings, the beater roll includes a grinding bar support. Preferably, for lightness and simplicity of construction, this roll is made up of a plurality of spiders or heads, four such heads, marked 1, 2, 3 and 4 being shown, these heads being supported on a suitable shaft 5. These heads are provided, of course, in suitable numbers, depending on the width of the roll and the corresponding width of the grinding bars. in accordance with the invention, these heads are provided with a plurality of grooves, one such groove being provided for each or the grinding bars, which are indicated by the numeral 6. These grooves, which are indicated at 7, are formed so as to extend longitudinally of the heads, so that they can be readily produced in the heads without the necessity of any special machining. As illustrated, the walls 8, 9 of the grooves are termed parallel with each other, longitudinally and. vertically of the roll, so that they an be readily cut without the necessity of special machining. In forming the grooves, blocks, indicated by the numeral 10, are formed between the grooves, and in one of the walls of theblocks, as for instance the wall 8, a longitudinal slot 11 is cut.

The grinding bars 6 are shown with a flat side 12 and a double bevelled side 13, as is generally used, but it will be understood that other shaped bars may be used within the invention. In the construction of the present application, however, the grinding bar, below the surface of the blocks and above the surlace ot' the head, is tor-med with a slot or opening i l. which preferably is in the shape of a trapezoid, this opening extei'uling entirely through the bar and being aligned with the notch ll-cut in the block, the bar being placed in the groove so that the Hat side of the bar lies against the notched wall of the groove, as shown in Figures 2 and 3. This slot is formed with its top side ll parallel with the edge of the bar 6, the bottom of the slot being indicated at 15.

Cooperating with the bar are wedging devices t'or locking the bar in the groove. lVhile these wedging devices may vary somewhat in construction, in the particular construction illustrated there are two wedges 16, 17, and the one of these wedges next to the bar will have one side tapered longitudinally and the other side shaped to conform to the shape of the bar. In the particular construction shown, however, where double bevelled bars are used, the wedge 16 tapers both longitudinally and vertically, whereas the wedge 17 til) tapers longitudinally only. The wedge 16 is formed with projecting surfaces, one of which, as 18, passes through the slot 1% ant engages in the notch or groove 11, before referred to. Offset from the part- 18 a wedge shaped portion 19, the inclined "face of whi 3h engages the inclined face 15 ot the slotoi the bar. Thus the wedge 16 locks the bar in position. Preferably, as shown, the w is locked in position by the wedge 11 wedge 16 having a rib 20 which engages a groove 21 cut in the wedge 17.

In assembling the roll, a bar is placed in position in its groove 7, and the wedge lo placed in position with the projection 18 projecting through the hole 14- in the bar and entering the slot or notch 11. ii edpc 16 is then driven cndways to cause the wedge projection 19 to travel up the incline 15 of the slot in the bar, thus forcing the bar down to its seat in the head of the roll. i 'i edge 14 is then driven into place, thus loclzin the whole to ether the rib QO and the roov- 1 oi the b 7 t) wedges interlocking, thus prevcntni the wedge 17 from being displaced radiailyl If desired the usual wood fillers 2:2 mav be provided between the bars, these heir illustrated 1n Flgures 1 and 2. Preito the wedges 16, 17 are made of non-cori.'- rive 1 terial so as to prevent their being stuck =.O" gether by rust and hindering the removal of the bars.

With the construction shown and described, it will be seen that a very simple 1. cking mechanism for individually locking the bars in the rolls has been provided by the present invention, one in which no special inachining of the roll is required, and one in which any bar may be readily removed from the roll without disturbing the other bars in any way.

While the invention has been shown and described in its preferred form, it will un derstood that various changes may be made in the form and shape of the parts withmit departing from the invention as defined in the appended claims.

hat I claim is:

1. A beat-ing roll for refining engines and the like comprising a grinding bar support, longitudinal grooves in the support, the walls of which are parallel longitudinally and vertically of the roll, grinding bars seated in the grooves and provided with openings extend ing through the bars, locking members having projections extending through the openings and engaging the surfaces thereof, and means for holding the locking members in position.

2. A beating roll for refining engines and the like comprising a grinding bar support, longitudinal. grooves in the support, the walls of which are parallel longitudinally and vertically of the roll, grinding bars seated in the grooves and provided with opening extending through the bars, locking members having ,ese

projections extending through the openings and engaging the surfaces thereof, and locking wedges engaging the locking members.

3. A beating roll for refining engines and the like comprising a grinding bar support, longitudinal grooves in the support, grinding bars seated in the grooves, locking members tapering longitudinally and vertically in the grooves, and locking wedges tapering longitudinally and engaging the lockii'ig members.

1. A beating roll for refining engines and the like comprising a grinding bar support, longitudinal. grooves in the support, grinding bars seated. in the grooves and provided with recesses, locking members tr 11 mg lon gitudinally and vertical y and he. projections en; aging the walls of the is, and locking vedges tapering l!)ll itll(lhlfill: and engaging the locking members.

5. A beating roll for refining engines and the like comprising a grinding bar support, longitudinal grooves in the support, grinding bars seated in the grooves and provided with slots extending through the bars, said slots having inclined surfaces, locking members having projections extending through the slots and projections engaging the inclined surfaces of the slots, and locking wedges enthe members.

i). A beating roll for refining engines and the like comprising a grinding bar support, longitudinal grooves in the support, one of the walls of each of said grooves being pro vided with av notch, grinding bars seated in the grooves and provided with slots extending through the bars, locking members having projections extending through the slots and entering the notches, projections engaging the surfaces of the slots, and locking wedges engaging the locking members.

7. A beating roll for refining engines and the like comprising a grinding bar support, grinding bars removably mounted in the support, and means for separately locking the bars in position, said means including a locking member tapering longitudinally and vertically and a. locking wedge tapering longitudinally and engaging the locking memher.

8. A beating roll for refining engines and the like comprising a grinding bar support, longitudinal grooves in the support, the walls of which are parallel longitudinaily and vertically of the roll, grinding bars seating in the grooves and provided with openings extending through the bars, said openings having inclined surfaces, wedges having projections extending through the openings and in clined projections engaging the inclined surfaces of the openings, and means for holding the locking wedges in position.

9. A beating roll for refining engines and the like comprising a grinding bar support, longitudinal grooves in the support, the walls of which are parallel longitudinally and vertically of the roll, grinding bars seating in the grooves and provided with openings extending through the bars, said openings having inclined surfaces, wedges having projections extending through the openings and inclined projections engaging the inclined surfaces of the openings, and locking wedges engaging the first named wedges for locking them in position.

10. A beating roll for refining engines and the like comprising a grinding bar support, longitudinal grooves in the support, the walls of which are parallel longitudinally and vertically of the roll, grii'iding bars seating in the grooves and provided with openings ex tending through the bars, said openings ha ving inclined surfaces, wedges having projections extending through the openings and inclined projections engaging the inclined surfaces of the openings, a rib on the side of the wedges opposite the projections, and looking wedges having grooves cooperating with the rib.

11. lvileans for locking grinding bars in a beating roll including a wedge having a projection having an inclined face for engaging an inclined surface in the bar, said wedge being tapered longitudinally and vertically.

12. Means for locking grinding bars in a beating roll including a wedge having a projection having an inclined face for engaging an inclined surface in the bar, said wedge being tapered longitudinally and vertically and provided on the side opposite the projection with a locking rib.

13. A beating roll for refining engines and the like con'iprising a grinding bar support, longitudinal grooves in the support, grinding bars seated in the grooves, locking members l'iaving one side tapering longitudinally and the other side formed to conform with the shape of the adjacent face of the bar, and locking wedges tapering longitudinally and engaging the locking members.

14. Means for locking grinding bars in a beater roll including a wedge having a projection having an inclined face for engaging an inclined surface in the bar, said wedge being tapered longitudinally on one side and having its other side shaped to conform to the shape of the adjacent face of the bar.

hileans for locking grinding bars in a heater roll including a wedge having a projection having an inclined face for engaging an inclined surface in the bar, said wedge being tapered longitudinally on one side and having its other side shaped to conform to the shape of the adjacent face of the bar, and provided on the side opposite the projection with a locking rib.

In testimony whereof, I have hereunto set my hand.

FRANK G. FEELEY. 

